Major Finding: The proportion of 5- to 14-year-olds infected with 2009 H1N1 flu in high-risk regions of England increased from 3.7% at baseline to 45.7% in September 2009.
Data Source: Serologic survey using 1,403 serum samples pre–2009 H1N1 outbreak and 1,954 from August and September 2009.
Disclosures: Lead author has none; two others have ties to Novartis, Sanofi Pasteur, Baxter, and CSI Australia.
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